Below the video, 13-year-old Toni Cornell wrote: "Recording this song with you was a special and amazing experience I wish I could repeat 100 times over and I know you would too."

Earlier this year, a posthumous recording of Chris Cornell performing a poem by Johnny Cash was released. The track appears on a compilation of adaptations of Cash's poetry by artists including Elvis Costello, Kacey Musgraves and The Jayhawks, according to Pitchfork.com.

"Nothing Compares U 2" is a track originally written by Prince and famously covered by the Irish singer, Sinéad O'Connor.